1. The prevention area refers to the residential quarters, natural villages, units and places that have not reported positive infections in the last 14 days. The prevention and control strategy is to reduce mobility and avoid gathering. Appropriate activities can be carried out in the administrative area, but crowd gathering should be strictly restricted.
2. The controlled area refers to the residential areas, natural villages, units and places where no positive infected persons have reported in the past 7 days. The prevention and control strategy is to implement 7-day home health monitoring and stay at home in principle. Under the premise of strict personal protection, everyone can go downstairs at different times, take a non-contact way to access materials in the designated area, and at the same time, everyone should strengthen the disinfection of the accessed materials.
3. Closed control area refers to the residential areas, natural villages, units and places where positive infected persons have been reported in the past 7 days. The prevention and control strategy is to implement 7-day closed management, close the area, stay indoors and provide on-site service.